An f-Theta Lens Design for Bio-Medical System: Laser Scanning Microarray Reader

Abstract

Laser scanning technology has put in microarray image system for its characteristic of non-contact measurement, high performance, and good sensitivities for the development of bio-technology. In the requirement of metrology, microarray biochip image has become more precisely and non-contact measurement like optical detector or ultra wave sensor is plenty applied in the imaging system. The paper provides the new type construction of laser con-focal microarray scanning and fluorescent detection system. The enabling key component, f-theta lenses, is designed as micro-meter focusing scanning lens. The scanner exploits the functional advantages and the optical system has small spot size, great linearity and large depth of focus. The system is expected to be simply operate, small hardware size, and fast speed. The optical design of the scanning lenses and the fabrication of scanner are also introduced and discussed